database engine tuning advisor

Label:Original: Database Engine Tuning AdvisorDatabase performance is largely dependent on whether the table has a suitable index. However, workloads and data change at any time, and existing indexes may not be entirely appropriate and may require a new index.However, it is very difficult to decide on an index because it can have a negative effect on other querie

same time, tracking different databases and tablesIf you are working with Database Engine Tuning Advisor for SQL, it's better to analyze your SQL statement performance if, and will tell you how to modify it would be better, let's have a look.How Database

Some time ago, I had a performance problem with my website, and sometimes the page was very slow to open. It would take more than 10 seconds. I tried a lot of methods, including cache, disable viewstate, and Disable debug mode. The improvements were not obvious. Later, I ran into SQL Server Profiler to check the cause: a slow query dragged down the entire page. Later, the query was optimized, but not many improvements were made. Finally, an index is created for this table, and the CPU time co

Tags: disco net text http speed data start time NTS database applicationOriginal: SQL Performance Detection Tool: SQL Server Profiler and Optimization tool: Database Engine Tuning Advisor I. Summary of TOOLS? database application

Tags: file http img Local image HTTPS student engine MSSThe recent project to do thousands of students to face recognition record (currently about 630000 lines) query the last record, it is conceivable that the performance of this piece is a problem. As a shen, get to SQL Server Profiler and Database Engine Tuning

When Oracle database performance problems occur, it is effort-saving to use the Oracle toolkit and give reasonable optimization suggestions. The following two packages are described and their specific practices. The smallest adjustment tool for SQL Tuning Advisor. Use one or more SQL statements as the input content, analyze all access paths, generate suggestions

database to consider whether the tuning method is feasible, this must be the DBA grasp; It is also necessary for DBAs to understand why it is so tuned that they are better able to give specific tuning options based on the actual situation, or else the high-quality work will become cheap. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Tags: autotask sql_tuningProduction on a set of 11g database Alert.log error ora-16957:sql Analyze time limit interrupt.Querying MOS-related documents troubleshooting:ora-16957: "SQL Analyze time limit Interrupt" Errors (document ID 1275248.1)The ORA-16957 error is a internal error code used to indicate that SQL Tuning Task have reached the time limit for Tuning

How to use STA (SQL tuning advisor), tuningadvisor1. manually generate SQL tuning advisor1. SQL text format:DECLAREMy_task_name VARCHAR2 (30 );My_sqltext CLOB;BEGINMy_sqltext: = 'select * FROM DBA_SEGMENTS where owner = ''clic' AND SEGMENT_TYPE = ''table ''';My_task_name: = DBMS_SQLTUNE.CREATE_TUNING_TASK (SQL _text => my_sqltext,Scope => 'computing ',Time_limit

In-Memory Advisor analyzes your workload and then provides suggestions on how to configure Oracle Database In-Memory Advisor.This advisor is part of the Database Tuning pack. Attachment imadvisor.zip (https://support.oracle.com/epmos/main/downloadattachmentprocessor? Parent

stored, the maximum value and the pointer to the next primary leaf level block, or a non-leaf level block (pointer), where the pointer is the file number + block number of the block. In the B*tree block of Oracle, the key value of the indexed column is stored +rowid (the file number + block number + slot number of the data row) so that the data rows in the table can easily be found through the index by the key and ROWID values in the B*tree. The data row in the segment in Oracle is the heap str

recommendations on how to configure Oracle Database In-memory Advisor.The advisor is part of the Database Tuning pack.Annex Imadvisor.zip (Https://support.oracle.com/epmos/main/downloadattachmentprocessor?parent=DOCUMENTsourceId =1965343.1attachid=1965343.1:imadvisorclickstream=yes)The

MySQL configuration parameter OptimizationThis article comes from Dawson study notes, copyright http://wubx.net/AllMyISAM Storage Engine OptimizationThe parameters involved are as follows:Key_buffery_sizeConcurrent_insert = 2 | WaaysBulk_insert_buffer_size=8mMyisam_recover_options=forceMyisam_recover_threads=1myisam_sort_buffer_size=1gParameter explanation:key_buffery_size It is mainly used to store the index information of the MyISAM table, and

adjustment is mainly based on the database status. For more information about tuning, seeV..4. select an appropriate storage engine based on specific scenarios. Iv. Application Level View slow query logs and query the SQL statements in the slow query log optimization program, such as adding an index 5. Adjust the key buffer and cache 1. key_buffer_size First, yo